Stapling machine attachment



Feb. 8, 1938. J. L. WALSH STAPLING MACHINE ATTACHMENT FiledJuly 2, 19362 Sheets-Sheet l ATTORNEY,

J. L. WALSH 2,107,555

STAPLING MACHINE ATTACHMENT l Feb. 8, 1938.

Filed July 2, 1936 2 Sheets-Sheet 2 1NVENTOR- JOHN LEE WALSH ATTORNEY.

Patented Feb. s, 193s STAPLING MACHINE ATTACHMENT John Lee Walsh,Baltimore, Md., assignor to May Oil Burner Corporation,

Maryland a corporation of Application July 2, 1936, Serial No. 88,633

5 Claims.

This invention relates to stapling machine attachments and hasparticular reference to a device to be attached to hand staplingmachines, whereby' the stapling machine will be adapted for usev inpositions more remote from the operator than those in which suchstapling machines areV ordinarily used land likewise in narrow orconstricted situations where material is to be fastened toA surfaces orto articles difficult of access.

The type'of stapling machine to which the present invention isparticularly applicable Vis such. as is ordinarily used for tacking tagson boxes, or paper or vcardboard Yliners vin packing cases and which isusually held in one hand by the operator. By means vof a hand leverwhich is depressed bythe same hand that holds the device, a trip plungeris actuated to drive a doublejpointed" tack or staplefed from aV stripof staples inserted in a magazine, a staple being fed into positionfordriving from the staple strip at the same time, by the one movement ofthe hand lever'.

It is the. object of the invention to provide an adjustable' device, toAbe attached to any of the suitable well-known types of hand leveroperated staplingl machines whereby sheathing paper or lining. may befastened to a wall or to the rafters of a roof, on the outer or theinner side, in comparatively remote positions, or for fastening suchmaterial to' the joists in the attic of a house, particularly in theacute angular portions between joists and rafters, or in constrictedlocationsl between the attic space beams and room walls, or in angularspaces in the attic, or about gabledf windows, or in corners where it isdiilicult, ict not quite impossible, to reach Yin the ordinary manner ofuse of: such machine.

The: present invention has for its particular object to enable anYoperator to apply heat insulation material in sheet form to the lowersides of rafters under a roof or to the upper faces of attic, floor orceiling joists. I have found that for the application of insulationmaterial which comprises insulation in rolls, as for instance balsam:wool, metal foil sheathing paper or such like material, the insulationmay be slid into position with a stapling device provided with theattachment, and the staples inserted from a remote position.

These objects are accomplished by means of the device described andclaimed hereinafter, preferred embodiments of which are shown 1n the'accompanying drawings in which:-

Fig. 1 is a broken side elevational view, partly in` section, of asuitable stapling machine provided with the device for remote operation,showing the manner in which the adjustable extention bar and system oflevers are attached and the operating parts, whereby the result isaccompushed'. i

Fig. 2 is a front elevational view of the same.

Fig. 3 is a fragmental, broken side elevational view showing the housingplate, the lever system and' the suction cup gripper whereby thestapling machine is adapted for remote opera- 0 tion and showing'thedisposition of the various parts and their connections. Y

Fig. 4 is a fragmental, broken side elevational view showing anadditional extension bar added.

Fig. 5 is a view of a modification of the device, 15 in perspective,with suction gripping cup omitted.

While I have shown these specific embodiments of my invention in thedrawings, it is understood that the system of levers and extension barsmay be adapted for use with any of the suitable stapling machines incurrent use.

Referring now to the drawings, in which like numerals designate like orsimilar parts, I I is the housing of a stapling machine, I2 is the leverpivoted at I3, by means of which the stapling l25 mechanisml and feedare operated. The staple strip I4 is fed under the stapling cutter andplunger I6, which detaches one staple from the strip and drives it underthe impulse of a spring 20, which is compressed bythe downward movementof the lever I2 and released by means of a trigger mechanism.

The lever plate 30 is provided with a threaded pin 3I,` passing throughthe opening 32 in the housing II, the wing nut 33 and washer 34 servingto clamp the plate 30 in its position with relation to the housing. Atthe upper portion of the lever plate is a boss 35 in which is journalledthe bell crank lever shaft 36. At one end of this shaft 36, the longlever arm 31 is xed in position and at the other end, the short leverarm 38, carrying the roller 39, journalled on pin 40. The stop 5I!limits the throw of the bell crank lever. The extension bar 5I is xed tothe lever 45 plate 30 by screws 52. At the end 53 of the exe tension barnearer the user, the remote operating hand lever 54 is pivoted by pivot55, the extension bar being provided with a plurality of holes 51,spaced apart, so that the hand lever 50 54 may be pivoted in therequired position. 56 isr the hand grip for lever 54. This operatinghand lever 54 is adjustably connected to the bell crank lever at 60, bythe clevis 6I with connecting link 62, adjustable chain 63 and hook 64.55

The chain is connected to the remote operating handle by means of thepin 66 and clevis 65.

The suction cup gripper bracket 4| is fixed in position on the staplingmachine housing Il, by means of the screws 42. The plunger 43 isprovided with rounded head 48, the plunger stem passing through suitableholes in bracket 4l. A exible rubber suction cup .44 is fixed to thelower end of plunger 43. The suction cup is positioned so that itsconcave portion is toward the material which is to be fastened in place.The plunger is depressed by pressing upon the head 48. When the edge ofthe cup contacts the smooth surfaceof the material, the cup is deformedforcing the air out from within it and a partial vacuum is produced inthe cup causing the material to adhere to the lip ofthe cup by suction.The spiral spring 45 surrounds plunger 43 and is retained in place bywasher 46 and pin 41. The spring is compressed when the plunger isdepressed. When the plunger' is released the spring expands. Thematerial which is light in weight is held sufficiently tightly by thesuction cup to permit of its being moved with the device into thevremote stapling position. When the material is in position and thestaple has been driven to hold the material at the point required, aswill be described hereinafter, the suction cup is released from thematerial by a, light pull on the device which breaks the suction cupvacuum. The material being now held in place by the driven staple,stapling is proceeded with by moving the device from point to point,driving staples Without further use of the suction cup.

The operation of the device is as followsz-The material to be fastenedin place is made ready, a strip of staples is inserted into the machinemagazine, and the remote stapling attachment xed in position on thestapling machine, the connectionchain being adjusted to suitablelengthso as to hold the remote operating lever in the forward position. Theoperator places the stapling device onthe sheet of material to bestapled in place, so that when the suction cup plunger is depressed, theedge of the cup contacts the surface' of the material near to a`suitable location on the material for a staple to be driven through thematerial into the part of the building to which the sheet is'to befastened. The pressure on the cup causesit'to collapse and a partialvacuum is formed thereunder so that the surface of the material incontact with the cup lip adheres to it and the plunger is held in properposition by the compression of thespiral spring 45. AThe material andstapler are together pushed into the remote position by means of theextension bar the suction cup retaining the material in position withsuicient force to permit the material to be positioned for stapling.When the materialis in the required position to be stapled in place,.the hand lever 54 is moved toward the operator. The chain attachment tothe long lever draws the bell'crank lever end backward, the

other lever arm 38 travels downward, the roller ,33 bearing upon thehand lever .l2 presses itv 4at the same time the next staple is fed intodriving position and the stapling machine is ready to drive the nextstaple. The stapling operation may now be carried on for the remainderof the sheet without the need of using the suction cup until therequired staples are driven in the other remote positions. Theattachments may then be detached from the stapling machine and themachine used as a hand stapler in the regular usual manner for drivingstaples in more accessible locations.

'I'he extension bar l0, shown in'lig. 4, is used with the machine whenit is required to be operated in still more remote positions, it beingonly necessary after attaching the extension bar 10 by means of thescrews 1|, to extend the length of Vthe connectionch'ain as required.'I'he modication-shown in Fig. 5, shows the device without the suctioncup gripper. This modication may be used where the material to be fixedin place is rigid enough or` of such a nature to be slid into positionwith the tacker without'need of being gripped. Y

'Heretofora it has been extremely difcult if not impossible to fix sheetinsulation material in remote and restricted places particularly thesocalled Metallation which comprises metal foil fastened on a cardboardorfpaper base, but with this. improved attachment, tov the hand staplingmachine the .Metallation can be very easily and firmly attached in placeat a great saving in time and labor. WhileY a preferred embodiment ofthe invention has been described it is nevertheless' understood that theinvention in modified form may be used with other suitable hand staplingmachines. i

Having described thexinvention, what I claim as new' and Vwhat IY desireto secure by- Letters Patent is:`-

1. A portable stapling device, comprising a spring actuated stapler unitand a detachable extension device attached thereto, said extensiondevice comprising an extension arm, a manually operable lever pivoted atone end of said arm, means at the other end of said arm for actuatingsaid spring, actuated stapler unit, and means Fil for linking saidmanually operable lever with claim 1 wherein the extension arm of saiddetachable extension device and the means for linking said manuallyoperable lever with said arm actuating means are correspondinglyadjustable.V

3. A portable stapling devicev comprising a spring actuated stapler unit`and a detachable extension device attached thereto, said extensiondevice comprising an extension arm Yadjustable as to length, means forvdetachably attaching said extension device to said stapling unit, amanually operable lever pivoted atl one'end of said arm, a bearingportion at the other end of said arm, a bell crank lever journalled insaid bearing, an adjustable detachable 'linkage means whereby one arm ofsaid bell crank lever is operatively connected with said manuallyoperable lever, a roller mounted upon a `stud carried by" the other armof said bell crank lever, said roller operatively contacting theactuating means of said stapling unit whereby when the said manuallyoperable klever is oscillated, the stapling unit is actuated.

4. A portable stapling device comprising a spring actuated stapler unitand adetachable extension ,devicev attached thereto, said extensiondevice comprising an extension arm adjustable as to length, means fordetachably attaching said extension device to said stapling unit, amanually operable lever pivoted at one end of said arm, a bearingbracket at the other end of said arm, a bell crank lever journalled insaid bearing bracket, an adjustable length linkage means attached at oneof its ends to one arm of said bell crank lever and at its other end tosaid manually operable lever, the other arm of said bell crank leverprovided With a pin upon which is journalled a roller, said rollerslidingly contacting the operating lever of said stapling head,

whereby when the manually operable lever of said extension device isoscillated the roller is depressed, depressing said operating lever ofsaid stapling unit thereby actuating the stapling unit.

5. The portable stapling device as claimed in claim 4, said staplingdevice being provided with manually operated suction cup means wherebysheet-like material is maintained in suitable stapling relation to thestapling head While said material is moved together with the staplingde- 10

